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Product Description
San Marzano Tomato Seeds – Italian Heirloom Variety by Ohio Heirloom Seeds
Grow the world-famous San Marzano Tomatoes, an authentic Italian heirloom variety cherished for its rich, sweet flavor and firm, meaty texture. Sourced from Ohio Heirloom Seeds, these premium, non-GMO seeds are perfect for gardeners who want to experience the classic taste of Italy right from their own garden.

Life Cycle
Annual plant
Planting Season
Spring, Summer
Growth Habit
Indeterminate vine
Flavor Profile
Sweet, low-acid
Plant Characteristics
Plum-shaped fruits
Use
Sauces, pastes
Growing Conditions
Full sun
Harvest Advantages
Heavy, extended yield
Plant Resistance
Crack tolerant
Solanum lycopersicum
Seed Names
San Marzano heirloom
Seed Type
Italian heirloom
San Marzano tomato seeds are an authentic Italian heirloom variety, celebrated for their elongated plum fruits with rich flavor and firm flesh. Originating from Italy and cherished worldwide, these seeds now thrive in Ohio Heirloom selections, ensuring quality and heritage. Perfect for traditional sauces and pastes, they provide gardeners with a reliable and flavorful harvest.
Light Requirement
Full sun
Planting Depth
1/4 inch
Sowing Method
Transplant preferred
Plant Spacing
18–24 inches
Days to Maturity
75–85 days
Soil Preparation
Start indoors 6–8 weeks before last frost
Hardiness Zones
USDA 5–11
Water Needs
Deep, regular watering
Planting Season
Spring after frost
Seed Count
Recommended Coverage
100
up to 50 sq. ft.
500
up to 250 sq. ft.
1000
up to 500 sq. ft.
Tomato thrive best in warm and sunny conditions with well-drained soil. Ensure consistent watering during the germination and growing phases for optimal yield.
Generally, Tomato seeds germinate within 7–14 days and take about 70–120 days to reach full maturity, and depending on growing conditions.
Yes and Tomato can be grown successfully in deep pots or containers with nutrient-rich soil. Ensure proper drainage and sunlight exposure.
Water the plants regularly to keep the soil moist but not soggy. During hotter days and more frequent watering may be needed.
Absolutely! Tomato are known for being easy to grow and making them ideal for beginners and home gardeners alike.
These San Marzano seeds were easy to grow, and the tomatoes taste exactly like the ones I remember from Italy. Perfect for sauces and fresh salads. Highly recommend for anyone who loves heirloom varieties.
I planted these seeds indoors first, and nearly all of them sprouted. The seedlings are strong, and the fruits are long, juicy, and full of flavor. Definitely worth the purchase.
Growing heirloom tomatoes takes some patience, but these seeds delivered. The fruits are dense, sweet, and perfectly balanced for pasta sauces. A must-have for home gardeners.
The seeds arrived in good condition and sprouted reliably. The plants grew strong, and the first harvest was impressive. Excellent for anyone who loves garden-fresh tomatoes.
I grew these tomatoes in my backyard garden. The flavor is rich and tangy, and they hold up well for cooking sauces. I will definitely buy these seeds again next season.